div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imagea href=https:reader042vdocumentinreader042viewer20220304065a7fa07e7f8b9a682c8ba67fhtml5page1jpg target=_blank img data-url=is-a-subset-of-a-topological-space-x-t-then-show-that-a-a-u-ad-in-r-u-lethtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: · PDF fileIfÁ is a subset of a topological space X T then show that A = A U Ad In R U Let Q be the set of rationals find IntQ ExtQ Q and FrQ loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader042vdocumentinreader042viewer20220304065a7fa07e7f8b9a682c8ba67fhtml5thumbnails1jpg width=140 height=200 adivdiv